V-tec controllers in VVL's

Nissan QG15DE · Posted: Wed Jun 06, 2007 6:57 pm Post subject:

oh ok, thanks

wana-B-racer · Posted: Wed Jun 13, 2007 8:34 am Post subject:

One question
You said that the Mss and the V manage are both expensive and hard to tune so i take it that with those you have to activate the cams as well as change the FUEL to compensate for the extra air in the combustion chambers, so they are tunable.But with just the tach and shiftlite how are you going to correct the fuel curve for the extra air in the combustion chambers or are you leaning out your engines? I think that in order to get the proper performance you need to use the right things made for it.IE Mss or V manage.

dry · Posted: Wed Jun 13, 2007 8:42 am Post subject:

MAF systems (like the SR engines) automatically take into account extra air coming in due to changes in an engine's volumetric efficiency, e.g. different cams or different cam profile, and add fuel as necessary. It measures the MASS of air coming in, not the pressure of it.

The ECUs on B16/B18,etc engines use a MAP sensor and need to be retuned when you change the engine's breathing significantly (hence the need to add fuel when you engage VTEC earlier).

So, long and short of it is: you can get by with a simple RPM switch with the SR16/20VE.

Picasso · Posted: Wed Jun 13, 2007 10:52 am Post subject:

azis · Posted: Wed Jun 13, 2007 10:52 am Post subject:

^^^^thnx there dry

NiSmO-R · Posted: Wed Sep 05, 2007 12:46 pm Post subject:

DF1_2nR · Posted: Wed Sep 05, 2007 3:19 pm Post subject:

Check here for more info if need be.

http://www.sr20forum.com/neovvl-guides/.

Dragsta · Posted: Wed Sep 05, 2007 7:44 pm Post subject:

Nice thread Razz

nismotrinidappa · Posted: Fri Oct 19, 2007 3:22 am Post subject:

questions

1 will the rpm switches and/or tach swicth work on a rb25de vvl

2 can it be put back to stock vvl after

3 how much hp gains would there be?

azis · Posted: Fri Oct 19, 2007 5:55 pm Post subject:

yes it would work and all you would have to knowis the stock setting so you could tune what ever unit you using back to that figure if needed, as in hp gains...... only a dyno will tell

Nissan QG15DE · Posted: Sat Oct 27, 2007 8:14 pm Post subject:

There's a RB with VVL?

cjawahir · Posted: Sat Oct 27, 2007 10:48 pm Post subject:

the tach with shift light idea works great , all you need is a ground signal to the vvl, taken from the shift light , you could always use a relay between the shift light and the vvl unit.

I also use MSD RPM SWITCH module set at 4000 rpm..

cj

nismotrinidappa · Posted: Tue Oct 30, 2007 2:33 pm Post subject:

rb25vtc

Nissan QG15DE · Posted: Wed Oct 31, 2007 12:53 pm Post subject:

oh i see, kinda figured is that u mean Confused

.

Nissan QG15DE · Posted: Wed Jul 23, 2008 1:19 pm Post subject: